#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>

int main() {
    int a;
    while (scanf("%d", &a) != EOF)
    {
        for (int i = 1; i <= a; i++)
        {
            for (int j = 1; j < 2 * a; j++)
            {
                if (j >= 2 * (a - i) + 1)
                {
                    if (j % 2)
                        printf("*");
                    else
                        printf(" ");
                }
                else
                    printf(" ");
            }
            printf("\n");
        }
    }
    return 0;
}